Window shade operating device



.1. M. DlVlNIA l,82,853

WINDOW SHADE OPERATING. DEVICE Nov. 3, 1931.

Filed Aug. 5, 1929 2 Sheets-Sheet 2 A iiorney I Patented 13, 1931 PATIENT; O FIC JOHN mflmvmm, or cnmnnon, mssounr WINDOW SHADE OPERATING DEVICE l" Application filed August 5, 1929. Serial No. asaezai'ff F g This invention relates to a novel device or means for operating a window shade of the springless roller type. I is a matter of common knowledge that the usual'windowshade, at present employed and generally'marketed, embodies a spring equippedroller and ratchet means with which the shade is associated in a well known manner.

There have been devices in this class however, which do away entirely with the ratchet means and spring means and provide manually manipulated .cordsand counter-balanced [devices for raising and lowering the shades. .BI'lQfiY stated, the present invention necessitates the provisionofa pair of supporting v brackets, a's1 )ring-less roller having journals at its opposite ends mounted for rotation in these brackets, a curtain wound on the roller in the usual way, a drum and guide means at one end'of the roller, and a manipulated tape associated with the drum. and guide means for actuating thecurtain.

The distinguishable feature and the gist of t-he invention, is predicated'upon the drum ,7 and operating tape, wherein the same is f wound on the drumin a direction opposite to that ofthe winding of the shade, and wherein by disengaging thetape from its holding 3 means and allowing it tobecome slack, the shade will unwind or lower of its own weight, but may be rewound by a downward pull on thetape such as unwinds the tape from its retention and c oilingdrum. The particular detailsand the relative association and arrangement thereof, will be come more readily apparent from the following description and drawings. :j

Inthe drawings 1-. Figure '1 is an elevational view observing the structurefrom the inside of the window.

Fig. 2 is an enlarged fragmentary section- 7 a1 view showing the relationship of the curtain or'shade and the tape. 45 Fig. 3'is an end view showing one of the supporting brackets. 4 Fig. 4 is-a horizontal section showing a guide bracket;

. Fig. 5 is a similar viewshowing a resil- Y ient retention device, and I Fig, 6 is a fragmentary sectional view showingthe rollermounting and tape wind- 111%}(11'11mi i p i e 7 he entire assemblage may well be seen in Fig: 1"wherein it will be observed thatthe referencejnumeral '7, designates the window frame, while the reference characters 8 indicate the bearing brackets mounted thereon. The roller is indicated at ,9 and includes a suitable pintle 10 journaled for rotationin the bearing bracket. The roller has no springs as is understood, The curtain is designated'at 10 and is ofordinary construction and wound on the roller. One end of the curtain however, terminates in spaced relation to an adjacent bearing bracket to permit a flanged tape drum 11*to be mounted thereon asseen'in Fig; 6. This drum is in the nature ofaspool.

On the side bar of the frame below. this drum is a substantially U-shaped guide bracke; 12 and a suitable spring retaining clip 13. The tape is indicated at 14 and is wound on the drum as seen in Fig. 2 in a direction opposite to the winding of the curtain. 7 The free end portion of the tape extends down through the guide 12 and is hooked beneath the spring retaining clips 13 as seen in Fig. 5. A single operating tape only is provided.

In operation, I simply grasp the free end portion of the tape 14 and pull it sideways, thus engaging it from the retention clip 13.

, I now allow the tape to slacken in my hand,

under which conditions the weight of the curtain 10 overcomes the slackened condition of the tape, thus permitting the curtain to unwind and lower and this overbalancing feature of the curtain with respect to the tape in the proper ratio is the important factor of 9 the invention.

As the curtain unwinds and lowers, the

tape winds on its drum 11. When, however, it is desired to raise the curtain and pull 9 downwardly on the tape, causing the curtain to wind up and the tape to unwind. Naturally, the manual energy embodied in this step of the operation is important.

When the curtain is elevated sufliciently I engage the tape with the retention clip 13,

u llolding the curtainin place.

The invention is characterized by 'snch ex- V ceeding simplicity that a careful consideration of the description in connection with the drawings Will enable the readertoobtain a clear understandingcf the features, advantages'fand construction. Therefore, aimere lengthy description is regarded as unnece ssary.

Minor changes in shape, siiajandzarrangement of details, comingwithin' the field 0f invention claimed, maybe resorted to in *ac-'- tual practice if desired.

Having thus describediny'ini ention, what" ating device "having a' flat actuating tape means an l as b s win he t r resilient lclarnping arm hailing one end por- V ta e,nsi i am'ine ud n t b g iinally "e et pont ohgf Ia lengt g te th nt lwidthfiof the; tape and disposed-gin spaced parallelism te the indow frame fer the insertien ejfithetape therebetween, the arm friciionally clam pingthe tapelagainstthe win- 1Qw;f,1:ame,-andq fiou war ly di ted 100p- QBmd in ally ith the r e. end o h v offset gprtien of the arm.

n t tim ny h r ef 'ii' y gna u JOHN M. DIYI'NIA. 

